PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-14:42:50
G02     59.0           32.6                6.0 +/-    2.70       9.9 +/-    2.70  0.030 / 0.030
G05     62.2           65.2                8.7 +/-    1.03       9.5 +/-    1.03  0.030 / 0.030
G12     182.5          31.9                8.9 +/-    1.55      15.0 +/-    1.55  0.060 / 0.090
G13     127.0          14.5               10.0 +/-    1.59      25.3 +/-    1.59  0.110 / 0.100
G15     163.0          12.7                9.7 +/-    2.90      25.4 +/-    2.90  0.170 / 0.360
G21     271.1          16.4                7.5 +/-    1.14      18.1 +/-    1.14  0.250 / 0.460
G25     238.5          52.6                8.5 +/-    3.32      10.5 +/-    3.32  0.120 / 0.060
G29     327.6          53.0                8.0 +/-    0.50       9.8 +/-    0.50  0.100 / 0.090